Veneer-jointing machine



Jan. 18,1927.

v G. BUDDENBERG vammn JOINTING MACHINE 1 Filed June 2. 1925 3 Sheets-Sheet 1 liifirng:

s Shets-Sheet 2 G. BUDDENBERG VENEER JOINTING MACHINE Filed June 2. 1925 Jan. 18, 1927.

Patenteil- Jan. 18,

UNITED STATES 1,615,107 PATENT OFFICE.

GER-HARD BUDDENIBERG, OI BIVEBUNGEN, Gm.

VBNEER-JOINTING momma Application filed June'2, 1925, atrial No. 34,483, and in Germany April 8, 1985.

This invention relates to veneer jointing machines of that type in which theheatable supporting plate as well as the heatable ressmg beam are divided each into two on 'tudi'nal elements by a gap which is vertica to the surface of the veneer plate. The invention has for its object to improve the construction of veneer jointing machines of this type so. that each of said elements is one another a 'pressure being executed at the same time upon the surfaces of the veneer plates which plates are exposed at the same time to the action of heat.

This manufacturing method is possible owing to the fact that the supporting plate and the pressing beam are subdivided in longitudinal direction e. g. in the direction of the glue joint to be produced and that the elements of the supporting plate and the elements of the pressing beam can be moved the one towards the others. When the veneer lates have been gripped by the descending e ements of the pressing beam they are pressed the one against the other at the glue coated joint faces by the elements of the ressing beam and of the supporting plate ing moved the one towards the other. In order to prevent the mass of the veneer plates in proximity to'the glue joint from warping the opposite faces of the elements of the pressing beam and the opposite faces of the elements of the supporting plate have teeth ada ted to engage with one another and to be isplaced w1th regardto one another.

An embodiment of the invention is shown,

'by Way of example, in the accompanying drawings in whic Figure 1 is artly (righthand half) a front-view of t 'e im roved machine and partly (lefthand half a vertical section through it in the plane E-F of Fig. 2: Figure 2 is chiefl a plan of the machine, the

. upper longitu inal beam (30, Figs. 1 and 3) The opposite of the frame bein however, omitted and the upper portions the lateral frame members (31), i. e the ortions located over the upper longitudinal s aft (9), being shown in horizontal section. Figure 3 1s a transverse sectional view of the machine.

The frame comprises, besides the longitudinal top beam 30 and the lateral members 31 a bed 32 and standards 16 sup rting all these parts of the frame. The be 32 carries four horizontal beams 1, 2, 3, 4; more precisely the bed carries the two beams 3 and 4,

and these carry the other beams 1 and 2.

These otheror upper beams can be lifted oi! the lower ones by means of a lever 10. This lever is fastened with a key on a shaft 9 provided with eccentrics 7 and 8 located in inverted U-shaped members 7 and 8 connected with the beams 1 and 2 by the intermediary of cross-plates 5' and 6. These plates are firml connected with the beam 1, but the connection with the beam 2 is eil'ected by suitable means in such a manner that said beam can be shifted horizontally relatively to the beam 1. The beam 2 is movabllle, therefore, vertically as well as horizonta y.

The object of the eccentrics 7' and 8 is not only to lift and lower the beams 1 and 2, but also to press them upon the beams 3 and 4 or, more precisely, upon the two veneers toibe connected or united I other by a butt-joint, one of them being located between the beams 1 and 3, the other between the beams 2 and 4; and their edges being located between tooth-like projections extendin forth from the nei hbouring vertical SHIEICBS of all beams am? meshing with each other, that is to say, the projections of. the beams land 2 meshing with each other and those of the beams 3 and 4 meshing also with each other. The projections in question are visible in the middle portion of the upper half of Fig. 3 and in the middle portion of the lefthand half of-Fig. 1, where they are indicated by two rows of quadrangles hatched in opposite directions.

The shaft 9 can be turned by means of a hand-lever 10 located at one of the frontal ends of the machine. Another hand-lever 14 is located at the other frontal and of the machine and secured to ashaft- 13 extending along at the side of the beam 4 (Fig. 3). This shaft is provided "with two eccentrics "11 and12 located between a common plate 29 and two rectangular arms 11 and 12, the

with each a horizontal portions of which extend below the beam 4 and are firmly connectedtherewith, whereas the upwardly extending vertical portions serve to transmit motion from the eccentrics 11 and 12 to the beam 4 or, more precisely, to the beams 2 and 4, this being possible when the beam 2 is in contact with the beam 4 so as to be carried by it, but is not subjected to pressure by the eccentrics 7 and 8 The arms 11 and 12 serve for withdrawing the beams 2 and 4 from the beams 1 and 3 when a butt-joint has been finished, whereas moving the beams 2 and 4 towards the beams 1 and 3 (after the two veneers to be united with each other by a butt-joint have been placed on the one side between the beams 1 and 3 and on the other side between the beams 2 and 4) is effected by the eccentrics 11 and 12 by the intermediary of the plate 29 that is supported by the horizontal portions of the angular members 11 and 12. According as the lever 14 is turned to one or the other side, the beams 2 and 4 are moved towards, or away from, the beams 1 and 3, the lever 14 being, of course, manipulated only when the beams are located nearest with respect to each other as necessary to press the edges of the veneers against-one another in order to unite them firmly by a butt-joint.

The veneers to be united with each other may be piled upon wooden grates (not shown), carried by arms 101, 102, 103 and 104. In Fig. 3 only the arms on the left hand side or, more precisely, one (102) of said arms has been shown in order to ob viate crowding of the parts on the righthand side.

The veneers are introduced into the machine, or between the beams respectively, while the beams 2 and 4 are withdrawn horizontally from the beamsl and 3, and the beams 1 and 2 arelifted vertically off the beams 3 and 4. Now, in order to limit the inward movementbf the veneers shoved from both sides between the beams vertical and verticall movable pins 17 are provided which extend upwardly from below between the beams 3 and 4 and also a little between the beams 1 and 2. The upper ends of said pins are in the path of the veneers when these are being shoved in the machine, and they are withdrawn downwardly instantly after the beams 1 and 2 have been lowered down upon the beams 3 and 4. The veneers are now in the proper position relatively to each other, there being between them a gap corresponding exactly to the extent of motion of the beams 2 and 4 towards and against the beams 1 and 3. The pins 17 are connected with each other by a horizontal rod 18 carried at its ends by two bell-crank levers 21 (Fig. 3) and 22 (Fi 1), each of which is secured to a short sha (19, Fig. 3; 20, 1) carried by a bearing affixed to the respective frontal member 32 of the machine. The vertical arms of said bellcrank levers extend upwardly, and each bears against an eccentric 13 (Fig. 2) affixed to the shaft 13, the two eccentrics 13 being, therefore, also actuated manually by the lever 14, it being understood that their position relatively to the eccentrics 11 and 12 is such that the upper end of the pins 17 extend between the beams 1 and 2 when fresh veneers are to be inserted into the machine, as described.

Shifting of the beams in longitudinal direction is prevented by guide-plates 100, Fig. l. i

All beams have horizontal heating channels (25, 26, 27, 28, Fig. 3) to be fed with steam or hot air. This feature does not form part of this invention and I abstain from enter ing into details concerning it.

It is a matter of course that the veneer edges are covered with glue or any other suitable cementing medium before they are introduced into the machine.

I claim:

1. A veneer jointing machine, comprising, in combination, two parallel supporting beams for the veneers to be united, and two parallel pressing beams located above said supporting beams; means for moving said pressing beams towards and upon the veneers located upon said supporting beams, and means for moving one of these beams and that of the other beams which is located above it towards and against the remaining two beams, each of the supporting beams and each of the pressing beams having teeth directed toward the opposite beam and meshing with the teeth thereof and being adapted to be shifted with respect thereto, substantially as set forth.

2. A veneer jointing machine, comprising, in combination, two parallel supporting beams for the veneers to be united, and two parallel pressing beams located above said supporting beams; two transverse plates connected with said pressing beams, downwardly openmembers connected with said plates, a shaft extending through said members, eccentrics affixed to said shaft and being located in the said members, and means for turning the said shaft; a plate extending along one of the supporting beams and contacting with it, eccentrics cont-acting with said plate, a shaft having these eccentrics secured to it, and means for turning this shaft; angular arms aflixed to the lastmentioned beam and extending from its bottom to the counter side of said latter eccentrics and being. adapted to be shifted by them, substantially as set forth.

3. A veneer jointing machine, comprising, in combination, two parallel supporting beams for-the veneers to be united and two parallel pressing beams located above said supporting beams; abutment pins extending from below between said beams and means for actuating them automatically, the same means being adapted to move one of the snipporting beams to ther with that of t e pressing beams w ich is located above it towards the remaining two beams, and means for moving the pressing beams vertically down upon,and away from, the supporting beams, the said abutment pins being lifted when the supporting beam and the pressing beam mentioned are withdrawn from the remainin two beams, and being lowered when the sai supporting beam and the said pressing beam are moved towards the said rezxfnairliling two beams, substantially as set ort - 4. A veneer jointing machine, comprising,

in combination, two parallel supporting beams forthe veneers to be united, and two parallel pressing beams located above said supporting beams, each of said four beams havm tooth-like projections extending horig zontal yin the direction to the opposite beams and engaging the ga between the projections thereof; means or moving the pressing beams relatively to the. supporting] beams, and means for moving one pressingbeam and one supporting beam, i. e. twosuperposed beams, relatively to the remaining two beams, all substantially as shown and described.

In testimzrrlg whereof I afiix m si RHARD BUDDE no.

ature. 

